RSB II: Fix Necro/Tonic retaliation glitch

When countering a Necro/Tonic combo by the player, if Robert had no
remaining Holy Water, his retaliation move was incorrectly being delayed
by a turn; now he will immediately use Desperation Slash in that case.
Turn prediction at top level of attack menu

The turn prediction is now updated when selecting drawers at the top
level of the attack menu. To do this, it uses the data from the selected
move inside the selected drawer.
Account for queued actions when predicting turns

The turn prediction is now more accurate when attacking in the middle of
two-turn moves such as Charge Slash.  It doesn't yet account for moves
decided in advance by an AI-controlled battler, however.